Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (2): 344-357.DOI: 10.3969/j.issn.1004-1524.20230318

• Horticultural Science • Previous Articles     Next Articles

Cloning and expression analysis of FLS gene of flavonol synthetase in Lilium auratum and L.speciosum var. gloriosoides

LIU Xiaolin(), SUN Tingting, YANG Jie, HE Hengbin*()   

  1. Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, College of Landscape Architecture, Beijing Forestry University, Beijing 100083,China
  • Received:2023-03-10 Online:2024-02-25 Published:2024-03-05

Abstract:

The flavonol synthetase gene FLS were cloned from Lilium auratum and L. speciosum var. gloriosoides, respectively, and named as LaFLS and LsFLS. The results showed that the LaFLS and LsFLS genes contained 1 035 bp complete open reading frame and encoded 344 amino acids. The amino acid sequences were highly conserved, and both genes had the DIOX-N domain and the 2-ketoglutaric acid and iron (Ⅱ) dependent dioxygenase domain, belonging to the 2-ketoglutaric acid and iron (Ⅱ) dependent dioxygenase superfamily. Phylogenetic analysis showed that LaFLS and LsFLS were closely related to Tulipa fosteriana, except for the FLS of oriental hybrids Siberia and Sorbonne. Bioinformatics analysis showed that LaFLS and LsFLS were hydrophilic proteins without signal peptide sequences and transmembrane domains. Subcellular localization results showed that they were mainly located in the cytoplasm. The results of gene expression analysis showed that LaFLS and LsFLS increased first, then decreased and then increased with the development of flower bud, and the expressions of LaFLS and LsFLS were significantly higher in the colorless region than in the colored region.

Key words: oriental hybrids, FLS gene, flavonol, clone, gene expression

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